Web Ex / Java - Repeated Proxy Prompts

[josaxo]

I am not sure when this began happening, but as of this week, when attempting to access a web ex meeting, our users are prompted repeatedly for proxy credentials. It is not the native OS X proxy prompt, but a generic window titles 'Proxy Authentication Required'. Entering the user name and password to authenticate does not work, and the prompt reappears. I am seeing similar issues with flash content, and also repeated prompts related to java - the issues are not specific to Safari but also affect Firefox as well.

I exported the keychain items related to the proxy credentials for http and https into the system keychain, but this did not resolve the issue.

[josaxo]

I used the following script to resolve the issue with WebEx proxy prompts:
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.UserNotificationCenter.plist
sudo launchctl load - w /System/Library/LaunchDaemons/com.apple.UserNotificationCenter.plist

Does anyone foresee any issues with deploying this to all users?
Unfortunately it does not resolve the issue with repeated Java proxy prompts.

[josaxo]

Unfortunately this fix does not resolve the issue with Java (1.7.0_51) prompting for proxy credentials repeatedly. The issue seems to only affect Mavericks and not Mountain Lion. Has anyone been able to access Java content on 10.9.2 + Java 1.7.0_51 + Proxy?

[josaxo]

Have not been able to locate a solution for this... issue persists in Java 7 update 67...